Description
The A1242 Hall effect latch is a two-wire latch especially
suited for operation over extended temperature ranges, from
40 to +150癈. Superior high-temperature performance is
made possible through the Allegro
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patented dynamic offset
cancellation technique, which reduces the residual offset
voltage normally caused by device overmolding, temperature
dependencies, and thermal stress.
The current-switching output technique allows for the reduction
in cost in the wiring harness because only two connections to
the device are required. The current-switching output structure
also inherently provides more immunity against EMC/ESD
transients. These devices have low magnetic thresholds, thereby
enabling more flexibility in the magnetic circuit design.
The Hall effect latch will be in the high output current state
in the presence of a magnetic South Pole field of sufficient
magnitude and will remain in this state until a sufficient North
Pole field is present.
The A1242 includes the following on a single silicon chip:
a voltage regulator, Hall-voltage generator, small-signal
amplifier, chopper stabilization, Schmitt trigger, and a current
source output. Advanced BiCMOS wafer fabrication processing
takes advantage of low-voltage requirements, component
1242-DS, Rev. 6
Features and Benefits
?Chopper stabilization
?Superior temperature stability
?Extremely low switchpoint drift
?Insensitive to physical stress
?Reverse battery protection
?Solid-state reliability
?Small size
?Robust EMC capability
?High ESD ratings (HBM)
Two-Wire Chopper-Stabilized Hall Effect Latch
Continued on the next page&
Functional Block Diagram
Not to scale
A1242
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Not to scale
Amp
Regulator
Low-Pass
Filter
GND
VCC
GND
Package UA Only
Clock/Logic
To All Subcircuits
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相关PDF资料
A1244LUA-I2-T
IC HALL EFFECT LATCH SIP-3
A1302KUA-T
IC SENSOR HALL EFFECT 3-SIP
A1323LLHLT-T
IC SENSOR HALL EFFECT SOT23W
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IC SENSOR HALL EFFECT 4-SIP
A1354KKT-T
IC SENSOR HALL EFFECT 4-SIP
A1356LKB-T
IC SENSOR HALL EFFECT 3 SIP
A1361LKTTN-T
IC HALL EFFECT SENSOR LN 4-SIP
A1374EKB-T
IC SENSOR HALL EFFECT PREC 3-SIP
相关代理商/技术参数
A1243
制造商:Hakko 功能描述:Tip,0.8D,929 -2/939,903 Used With Soldering Stations
A1243LLHLX-I1-T
功能描述:IC HALL EFFECT LTCH DGTL SOT23W 制造商:allegro microsystems, llc 系列:* 零件状态:在售 标准包装:10,000
A1243LLHLX-I2-T
功能描述:IC HALL EFFECT LTCH DGTL SOT23W 制造商:allegro microsystems, llc 系列:- 包装:- 零件状态:有效 功能:- 技术:- 极化:- 感应范围:- 测试条件:- 电压 - 电源:- 电流 - 电源（最大值）:- 电流 - 输出（最大值）:- 输出类型:- 特性:- 工作温度:- 封装/外壳:- 供应商器件封装:- 标准包装:10,000
A1244
制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Chopper-Stabilized, Two Wire Hall-Effect Latch
A-1244
制造商:TE Connectivity 功能描述:
A12441/2
制造商:TITEX 功能描述:TITEX A1244 HSCO JOBBER DRILL 1/2"
A12442.0
制造商:TITEX 功能描述:TITEX A1244 HSCO JOBBER DRILL 2.00MM
A12442.5
制造商:TITEX 功能描述:TITEX A1244 HSCO JOBBER DRILL 2.50MM